FingerprintJS - Browser fingerprinting and fraud detection

Questions & Answers

What is FingerprintJS?

FingerprintJS is an open-source JavaScript library that generates a unique browser fingerprint for each visitor without using cookies. It analyzes various browser and device attributes to create a stable identifier.

Who can benefit from using FingerprintJS?

It is primarily beneficial for developers and organizations needing to detect fraud, prevent account takeovers, or personalize user experiences based on persistent user identification without relying on conventional tracking methods like cookies.

How does FingerprintJS compare to cookie-based tracking?

Unlike cookie-based tracking, FingerprintJS creates a persistent visitor identifier even when cookies are cleared or disabled, making it more resilient to common user privacy controls. It relies on a combination of browser characteristics rather than stored client-side data.

When is FingerprintJS most effectively used?

FingerprintJS is most effectively used in scenarios requiring high accuracy in identifying returning users or detecting suspicious activity, such as preventing duplicate sign-ups, identifying bot traffic, or enhancing security against fraud, especially in e-commerce or financial applications.

What technical details contribute to FingerprintJS's accuracy?

FingerprintJS collects numerous signals including browser plugin lists, screen resolution, operating system, fonts, canvas fingerprinting, WebGL information, and timezone. These data points are combined and hashed to form a unique, relatively stable identifier.